In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

Show answer & explanation
Correct answer: C
Explanation
Pattern: (C1+C2+C3) × 3=C4
Verify:
Row1: (5+4+7) × 3 = 16×3 = 48
Row 2: (8+2+3) × 3 = 13×3 = 39
In the same way, apply to Row 3:
(7+3+?) × = 42
10+? = 14
? = 4
Hence, the correct answer is option (2).